8010-00-430-0193 PRIMER COATING Index 2990-00-430-0207 BODY

National Stock Number:
5306-00-430-0198

Federal Supply Class:
5306

National Item Identification Number:
004300198

Description:
BOLT,MACHINE

Detail:
An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. The threaded and unthreaded portions are both of one nominal diameter of 0.190 inch (5 mm) or larger. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. For items having a grip length portion machined to a tolerance of 0.0015 inch (0.038 mm) or less, BOLT, SHEAR. See also SCREW, CAP, HEXAGON HEAD and SCREW, MACHINE.


Manufacturer Information:
106-22635301DRESSER INDUSTRIES INC LEROI DIV


Techincal Specification:
THREAD DIRECTIONRIGHT-HAND
FASTENER LENGTH0.406 INCHES NOMINAL
MATERIALSTEEL COMP 1018 OVERALL
THREAD LENGTH0.406 INCHES MINIMUM
HEAD STYLEHEXAGON
THREAD SERIES DESIGNATORUNC
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH20
THREAD CLASS3A
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
HARDNESS RATING79.0 ROCKWELL B NOMINAL OVERALL
MINIMUM TENSILE STRENGTH69000 POUNDS PER SQUARE INCH
HEAD HEIGHT0.188 INCHES NOMINAL
WIDTH BETWEEN FLATS0.438 INCHES NOMINAL
FEATURES PROVIDEDUNFINISHED HEAD
SPECIAL FEATURESONE HOLE IN HEAD


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